Induction Cooktop Power Delivery via Dual-Stage Switching
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Solution Overview
Problem
Existing induction hobs face limitations in delivering high power to a single cooking zone without requiring oversized and expensive generators, as they are typically sized for identical power outputs, restricting maximum power delivery to 2000 W per inductor.
Innovation Solution
The system employs at least three induction coils, forming two separate induction circuits with a common coil, and a power supply with two power stages that can be connected in parallel to deliver up to 4000 W to a single inductor, using a switch to distribute power based on container size and user preferences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If two power outputs are sized to deliver 2000 W each for standardized component configuration, then the generator cost and size are optimized, but the maximum power delivery to a single inductor is limited to 2000 W
Solution Approach 1:
The patent implements dynamic switching between two operational modes: (1) independent power output mode where each output delivers up to 2000 W to separate inductors, and (2) combined power mode where both power stages are connected in parallel to deliver up to 4000 W to a single inductor. The switching mechanism allows the system to adapt its power delivery configuration based on operational requirements, resolving the contradiction between standardized component sizing and high power delivery capability.
Solution Approach 2:
The power stages are designed to perform multiple functions: they can operate independently to power separate inductors simultaneously, or be combined through the switching mechanism to power a single inductor at higher power. This multi-functionality allows the same hardware components to serve different operational needs without requiring separate generator configurations for different power levels.
2Power
If two power outputs are sized to deliver 4000 W each to enable high power on a single cooking zone, then the maximum power delivery is sufficient, but the generator becomes oversized and expensive
Solution Approach 1:
The patent combines two power stages that are each sized at 2000 W capacity through a switching mechanism to achieve a combined power output of 4000 W to a single inductor. This merging approach allows the system to deliver high power when needed without requiring each individual power stage to be oversized, thereby reducing overall component quantity and cost while maintaining the capability for high power delivery.
3Adaptability or versatility
If a switch mechanism is added to dynamically connect power stages to inductors, then flexible power distribution is achieved, but the device complexity increases
Solution Approach 1:
The switching mechanism is segmented into discrete, manageable components that can independently connect or disconnect power stages from specific inductors. This segmentation allows for controlled complexity where each switching element has a defined function, making the overall system manageable despite the added versatility. The segmented approach enables flexible power distribution without creating an monolithic complex switching system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for efficient delivery of maximum power to a single inductor, enabling higher power output without increasing generator size or cost, while ensuring even power distribution across varying container sizes.
Implementation Method 1
The alternating current generators used in induction hobs to supply the cooking zones
Implementation Method 2
induction system, method for powering an inductor and cooktop comprising same
Data Source
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AI summary
The system has an inductor (105) comprising three induction coils (110, 115, 120), where the coils (115, 120) are assembled in series with the coil (110) to constitute two distinct induction circuits that include a common coil (110). An inductor supplying device has a current generator (125) comprising two power stages (140, 145). The device has a commutator (150), which connects the power stages to one of the induction circuits according to the position of the commutator. An independent claim is also included for a method for supplying two power stages of an inductor by a generator.